RESUMEN

PURPOSE: The level of the implant above the marginal bone and flap design have an effect on the bone resorption during the healing period. The aim of this study is to detect the relationship between the level of the implant at the implant placement and the bone level at the healing period in the mesial and distal side of implants placed with flapless (FL) and full-thickness flap (FT) methods. METHODS: Twenty-two nonsubmerged implants were placed with the FL and FT technique. Periapical radiographs were taken of the patient at implant placement, and at 6 and 12 weeks. By using computer software, bone level measurements were taken from the shoulder of the healing cap to the first bone implant contact in the mesial and distal side of the implant surface. RESULTS: At 6 weeks, the correlation between the crestal bone level at the implant placement and crestal bone level of the FT mesially was significant (Pearson correlation coefficient=0.675, P<0.023). At 12 weeks, in the FT mesially, the correlation was nonsignificant (Spearman correlation coefficient=0.297, P<0.346). At 6 weeks in the FT distally, the correlation was nonsignificant (Pearson correlation coefficient=0.512, P<0.107). At 12 weeks in the FT distally, the correlation was significant (Spearman correlation coefficient=0.730, P<0.011). At 6 weeks in the FL mesially, the correlation was nonsignificant (Spearman correlation coefficient=0.083, P<0.809). At 12 weeks in the FL mesially, the correlation was nonsignificant (Spearman correlation coefficient=0.062, P<0.856). At 6 weeks in the FL distally, the correlation was nonsignificant (Spearman correlation coefficient=0.197, P<0.562). At 12 weeks in the FL distally, the correlation was significant (Pearson correlation coefficient=0.692, P<0.018). CONCLUSIONS: A larger sample size is recommended to verify the conclusions in this preliminary study. The bone level during the healing period in the FT was more positively correlated with the implant level at implant placement than in the FL.

Asunto(s)

RESUMEN

UNLABELLED: Flapless implant placement requires punch removal of the gingiva without flap reflection, suggesting this technique will be less invasive, and with less tissue destruction, than comparable alternative techniques. METHODS: Eleven implants were placed with flapless (FL) technique and 11 implants were placed with full-thickness flap (FT) technique in split mouth technique. FL technique was done with dermal tissue puncture, while FT was performed with crestal incision, including the papillae. Patients were followed-up postoperatively for clinical and morbidity evaluation in both groups. RESULTS: There was no pain, and there were only mild signs of inflammation, at the sites of flapless implant placement in the 11 patients studied. In contrast, there were complaints of mild to moderate pain and signs of inflammation at the site of full-thickness flap implant placement in the 11 patients studied. In addition, there was gingival overgrowth over the healing cap noted in this group. CONCLUSIONS: FL technique may be recommended for the apprehensive or hyperalgesic patient because of the absence of pain it conveys, as well as the decreased postoperative swelling. Periosteal disruption is responsible for the patient's morbidity postoperatively.

Asunto(s)

RESUMEN

STATEMENT OF PROBLEM: In rehabilitating edentulous patients, selecting appropriately sized teeth in the absence of preextraction records is problematic. PURPOSE: The purpose of this study was to investigate the relationships between some facial dimensions and widths of the maxillary anterior teeth to potentially provide a guide for tooth selection. MATERIAL AND METHODS: Sixty full dentate Malaysian adults (18-36 years) representing 2 ethnic groups (Malay and Chinese), with well aligned maxillary anterior teeth and minimal attrition, participated in this study. Standardized digital images of the face, viewed frontally, were recorded. Using image analyzing software, the images were used to determine the interpupillary distance (IPD), inner canthal distance (ICD), and interalar width (IA). Widths of the 6 maxillary anterior teeth were measured directly from casts of the subjects using digital calipers. Regression analyses were conducted to measure the strength of the associations between the variables (alpha=.10). RESULTS: The means (standard deviations) of IPD, IA, and ICD of the subjects were 62.28 (2.47), 39.36 (3.12), and 34.36 (2.15) mm, respectively. The mesiodistal diameters of the maxillary central incisors, lateral incisors, and canines were 8.54 (0.50), 7.09 (0.48), and 7.94 (0.40) mm, respectively. The width of the central incisors was highly correlated to the IPD (r=0.99), while the widths of the lateral incisors and canines were highly correlated to a combination of IPD and IA (r=0.99 and 0.94, respectively). CONCLUSIONS: Using regression methods, the widths of the anterior teeth within the population tested may be predicted by a combination of the facial dimensions studied.

Asunto(s)